Project Info

A 30 kV Quadrupole Beam Bender for Charge Breeding Studies

  • Client: Joint Institute for Nuclear Research Dubna
  • Date of launch: Jun, 2014
  • Place: Dubna, Russia

Description

A 30 kV Quadrupole Beam Bender combined with pulsed high voltage power supplies is used at the Electron Beam Ion Source / Electron String Ion Source laboratories of the Joint Institute for Nuclear Research in Dubna, Russia, for charge breeding studies.

Its purpose is to bend a beam of singly charged metal ions produced by a liquid metal ion source (LMIS) by 90° for injection into an Electron Beam Ion Source / Electron String Ion Source (EBIS / ESIS) to perform charge breeding. The high voltage of the quadrupole can be pulsed so that the re-extracted beam of highly charged metal ions from the EBIS or ESIS can be guided straight through the quadrupole for further use. Additionally, an einzel lens attached to the quadrupole housing corrects the inevitable one-dimensional beam broadening after bending by 90°. Thus, the LMIS beam emittance can be adjusted to match the acceptance of the EBIS / ESIS.

The quadrupole and corresponding high voltage electronics were developed for up to ±30 kV so that beam energies of up to 25 keV per charge can be handled. The specially designed high voltage pulser including power supplies simultaneously switches all HV outputs between max. 90 % of 30 kV and ground potential within a ramping time of under 10 µs considering a min. delay between two "HV on" phases of the duty cycles of 15 ms.

Products

Quadrupole Beam Bender

Electrostatic ±90° Deflection of Charged Particle Beams